function menu1(){
	document.getElementById('elementMenu1').className = "selection-menu";
	document.getElementById('elementMenu2').className = "";
	document.getElementById('content1').style.display = "block";
	document.getElementById('content2').style.display = "none";
	
}

function menu2(){
	document.getElementById('elementMenu2').className = "selection-menu";
	document.getElementById('elementMenu1').className = "";
	document.getElementById('content1').style.display = "none";
	document.getElementById('content2').style.display = "block";
}

function setActiveCSS(title) {
	document.getElementById("style1").className = "";
	document.getElementById("style2").className = "";
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
		a.disabled = true;
		if(a.getAttribute("title") == title) {
			a.disabled = false;
			document.getElementById(title).className = "selection-style";
		}
     }
   }
}

